WO2015146507A1 - 切削工具 - Google Patents

切削工具 Download PDF

Info

Publication number
WO2015146507A1
WO2015146507A1 PCT/JP2015/056225 JP2015056225W WO2015146507A1 WO 2015146507 A1 WO2015146507 A1 WO 2015146507A1 JP 2015056225 W JP2015056225 W JP 2015056225W WO 2015146507 A1 WO2015146507 A1 WO 2015146507A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
coating
rake face
cutting edge
flank
Prior art date
Application number
PCT/JP2015/056225
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
南　徹
恭也 山田
Original Assignee
兼房株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 兼房株式会社 filed Critical 兼房株式会社
Priority to CN201580016073.2A priority Critical patent/CN106457411B/zh
Priority to JP2016510185A priority patent/JP6404906B2/ja
Priority to US15/122,779 priority patent/US10179366B2/en
Priority to EP15769762.4A priority patent/EP3106250B1/en
Publication of WO2015146507A1 publication Critical patent/WO2015146507A1/ja

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/02—Structural design of saw blades or saw teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/24—Cross section of the cutting edge
    • B23B2200/245—Cross section of the cutting edge rounded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
    • B23B2228/10—Coatings
    • B23B2228/105—Coatings with specified thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools

Definitions

  • the present invention relates to a cutting tool used for cutting non-ferrous metals and alloys thereof, wood, wood material or resin.
  • a cutting tool for cutting wood one with one or both sides of a rake face and a flank face covered with a hard coating has been proposed (see, for example, Patent Document 1).
  • the hard film is formed on a base material such as tool steel by a coating process using an arc ion plating apparatus, and is formed with a film thickness of, for example, about 4 ⁇ m over the rake face and the flank face. Then, one of the rake face and the flank face is polished and bladed. Thereby, while the base material is exposed on one of the rake face and the flank face, a blade with the other of the flank face or the rake face not polished is covered with the hard coating is obtained. Note that, in order to obtain a cutting tool in which both the rake face and the flank face are covered with a hard coating, the base material is previously bladed and polished.
  • a knives with either one of the rake face or flank face coated with a hard coating requires special special grinding stones or severe polishing conditions in order to obtain good cutting quality, which increases manufacturing costs. Problems arise.
  • the rake face and flank face do not take into account the film thickness ratios of the respective faces. Since the wear rate of the steel does not change much, the shape of the worn cutting edge becomes round. That is, a double-sided coated blade, like a single-sided blade, can maintain a sharp cutting edge derived from self-polishing properties in which the surface not coated with a hard coating progresses faster than the surface coated with a hard coating. I can't expect it.
  • the cutting edge is hard due to the stress remaining locally on the cutting edge with an acute angle. It has also been found that film chipping is likely to occur.
  • the present invention has been proposed in order to suitably solve these problems related to the prior art, and a cutting tool that can suppress chipping of the cutting blade while maintaining the sharpness of the cutting blade.
  • the purpose is to provide.
  • the cutting tool provides: Cutting used to cut non-ferrous metals and their alloys, wood, wood materials or resins, having a coating formed on at least part of the rake face and flank face including the cutting edge by covering the base material
  • the coating is formed such that any one of a rake face covering portion that covers the rake face and a flank face covering portion that covers the flank face is thicker than the other,
  • the film thickness of the thicker coating part is set in the range of 0.5 ⁇ m to 15.0 ⁇ m, and the ratio of the film thickness of the thinner coating part to the film thickness of the thicker coating part is 0.01 to
  • the gist is that it is set to be in the range of 0.15.
  • the surface of the rake face and the flank face having the thin film thickness has a self-polishing property in which the wear progresses more than the thick film surface. Can maintain the sharpness. Moreover, chipping of the cutting edge can be suppressed by forming the coating so that the film thickness differs between the rake face and the flank face.
  • the portion corresponding to the cutting edge in the base material is 0.2 ⁇ m to 18 ⁇ m from the intersection of the extension line of the rake face and the extension line of the relief surface in the base material.
  • the gist is that they are formed so as to be separated from each other.
  • the chipping of the cutting edge is performed in the cutting tool coated with the coating over the rake face and the flank face including the part by chamfering the part corresponding to the cutting edge in the base material. Can be further suppressed.
  • the gist of the invention according to claim 3 is that a portion of the base material corresponding to the cutting edge is formed in an arc shape having a radius of 0.5 ⁇ m to 6.0 ⁇ m.
  • the invention of claim 3 in the cutting tool coated with the coating over the rake face and the flank face including the part by forming the part corresponding to the cutting edge in the base material in an arc shape, The chipping of the blade can be more suitably suppressed.
  • the invention according to claim 4 is characterized in that the ratio of the film thickness of the thinner covering portion to the film thickness of the thicker covering portion is set to be in a range of 0.01 to 0.05. . According to the invention according to claim 4, by setting the ratio of the film thickness of the thinner coating part to the film thickness of the thicker coating part in the film, the ratio is set in the range of 0.01 to 0.05, Maintaining the sharpness of the cutting edge by self-polishing characteristics and suppressing the chipping of the cutting edge can be achieved in a balanced manner.
  • the coating film has a layer composed of at least chromium-containing nitride, oxynitride, oxide, carbide, carbonate, carbonitride, and carbonitride. It is a summary. According to the invention which concerns on Claim 5, abrasion resistance and corrosion resistance can be improved by having a layer containing chromium as a film.
  • the cutting tool according to the present invention can suppress chipping of the cutting blade while maintaining the sharpness of the cutting blade.
  • FIG. 1 is a top view which shows the replacement blade of the cutting tool which concerns on the suitable Example of this invention
  • (b) is a front view.
  • It is a cross-sectional schematic diagram which shows the cutting blade of the cutting tool which concerns on an Example, and is a case where a coating film is formed thicker than a flank in a rake face.
  • It is a cross-sectional schematic diagram which shows the cutting blade of the cutting tool which concerns on an Example, and is a case where a coating film is formed thicker than a rake face.
  • 4 is an electron micrograph of an enlarged cross-section of a main part of a cemented carbide replaceable blade, showing Test Example 4.
  • FIG. 1 is a top view which shows the replacement blade of the cutting tool which concerns on the suitable Example of this invention
  • (b) is a front view.
  • It is a cross-sectional schematic diagram which shows the cutting blade of the cutting tool which concerns on an Example, and is a case where a coating film is formed thicker
  • FIG. 7 is an electron micrograph of an enlarged cross-section of a main part of a cemented carbide replaceable blade, showing Test Example 7.
  • FIG. (a) shows the film thickness of the rake face for each distance from the cutting edge in the super hard blades of Test Examples 1 to 4, and (b) shows the distance from the cutting edge in the super hard blades of Test Examples 1 to 4.
  • the flank film thickness for each flank is shown, and (c) shows the ratio of the film thickness between the rake face and the flank surface for each distance from the cutting edge in the carbide replacement blades of Test Examples 1 to 4.
  • circle 1 corresponds to Test Example 1
  • circle 2 corresponds to Test Example 2
  • circle 3 corresponds to Test Example 3
  • circle 4 corresponds to Test Example 4.
  • circle 1 corresponds to Test Example 5
  • circle 2 corresponds to Test Example 6
  • circle 3 corresponds to Test Example 7.
  • FIG. It is a figure which piles up and shows cutting edge line roughness before and after the cutting test of test 1, and (a) shows test example 4, (b) shows test example 1, and (c) shows comparative example 1. Show.
  • the replaceable blade 10 of the cutting tool is configured by using, as a base material 12, a cermet containing steel such as tool steel, cutter steel, bearing steel, stainless steel, or cemented carbide, or a composite material obtained by combining these. (See FIGS. 1 to 3).
  • the cutting blade 10 of the cutting tool has a hard coating 20 formed on both the rake face 14 and the flank face 16 with respect to the base material 12 that has been sharpened by polishing in order to improve wear resistance.
  • the rake face 14 including the blade 18 and the flank face 16 are covered with a coating 20.
  • the coating 20 may cover the entire rake face 14 and the flank 16, and a part of the rake face 14 in a direction away from the cutting edge 18 and / or from the cutting edge 18 on the flank 16.
  • covers the partial range in the direction to separate may be sufficient.
  • the replacement blade 10 of the cutting tool is covered with the coating 20 in the rake face 14 and the flank face 16 in a range mainly used for cutting the work material (a range of 0.1 mm from the cutting edge 18). That's fine.
  • the coating 20 has a main layer (layer) composed of at least one of nitride, oxynitride, oxide, carbide, carbonate, carbonitride, and carbonitride containing at least chromium.
  • the main layer containing chromium faces the outer surface of the coating film 20. That is, as a main layer, chromium nitride (CrN), chromium oxynitride (CrNO), chromium oxide (CrO), chromium carbide (CrC), chromium carbonate (CrCO), chromium carbonitride (CrCN), An example is chromium carbonitride (CrCNO).
  • the coating film 20 has a layer containing chromium, it is possible to improve the wear resistance of the target work material such as wood.
  • chromium B (boron), Al (aluminum), Si (silicon), Ti (titanium), V (vanadium), Ni (nickel), Cu (copper), Y (yttrium), Zr (zirconium) ), Nb (niobium), Mo (molybdenum), Hf (hafnium), Ta (tantalum), and W (tungsten) can be combined.
  • the coating 20 may be formed by laminating a plurality of the main layers, and an appropriate underlayer may be provided between the main layer and the base material 12.
  • the underlayer at least metal, nitride, carbide, carbonitride, carbonate, oxide, oxynitride, carbonitride, etc. containing one or more elements such as titanium and aluminum in addition to metal chromium One layer may be mentioned.
  • the coating film 20 is formed so that the rake face covering portion 22 covering the rake face 14 and the flank face covering portion 24 covering the flank face 16 have different film thicknesses C1 and C2. It is formed. That is, one of the rake face covering portion 22 and the flank face covering portion 24 is set such that the film thicknesses C1 and C2 are thicker than the other.
  • the rake face 14 is mainly used in the replaceable blade 10 of the cutting tool
  • the rake face covering portion 22 is formed thicker than the flank face covering portion 24, and the film thickness C1 of the rake face covering portion 22 is 0.5 ⁇ m to 15 ⁇ m.
  • the ratio of the film thickness C2 of the flank face covering portion 24 to the film thickness C1 of the rake face covering portion 22 is in the range of 0.01 to 0.15, more preferably in the range of 0.01 to 0.05. Is set as follows. When the flank 16 is mainly used in the replacement blade 10 of the cutting tool, the flank covering portion 24 is formed thicker than the rake face covering portion 22, and the flank covering portion 24 has a film thickness C2 of 0.5 ⁇ m or more. In the range of 15 ⁇ m, the ratio of the film thickness C1 of the rake face covering portion 22 to the film thickness C2 of the flank covering portion 24 is in the range of 0.01 to 0.15, more preferably in the range of 0.01 to 0.05.
  • the ratio between the film thickness C1 of the rake face covering portion 22 and the film thickness C2 of the flank face covering portion 24 may satisfy the above-mentioned range over the entire surface.
  • the range of the ratio may be satisfied within a range mainly used for cutting a material (a range of 0.1 mm from the cutting edge 18).
  • the film thicknesses C1 and C2 of the thicker cover portions 22 and 24 are in the range of 0.5 ⁇ m to 15 ⁇ m, whereas the film thicknesses C2 and C1 of the thinner cover portions 24 and 22 are 0. It is set in the range of 005 ⁇ m to 2.25 ⁇ m.
  • the film thicknesses C1 and C2 of the thicker covering portions 22 and 24 as the main components are thinner than 0.5 ⁇ m, the wear resistance cannot be sufficiently improved. The film 20 is likely to be defective.
  • the ratio of the film thicknesses C2 and C1 of the thinner coating parts 24 and 22 to the film thicknesses C1 and C2 of the thicker coating parts 22 and 24 is larger than 0.15, a thick coating is formed when the work material is cut.
  • the surface 16, 14 coated with the coating parts 24, 22 thinner than the surfaces 14, 16 coated with the parts 22, 24 has less self-polishing properties due to the rapid progress of wear and the sharpness of the cutting edge 18. Difficult to maintain.
  • the ratio of the film thicknesses C2 and C1 of the thinner cover portions 24 and 22 to the film thicknesses C1 and C2 of the thicker cover portions 22 and 24 is smaller than 0.01. Practically impossible.
  • the rake face 14 or the flank 16 which is the main component of the cutting blade 10 of the cutting tool is appropriately selected depending on how to use the cutting blade 10 of the cutting tool and the surfaces 14 and 16 to be repolished.
  • the ratio of the film thickness C1 of the rake face covering portion 22 to the film thickness C2 of the flank face covering portion 24 described above is a comparison at a position where the distance from the cutting edge 18 is the same.
  • the ratio of the film thickness C1 of the rake face covering portion 22 at a position 0.05 mm away from the cutting edge 18 to the film thickness C2 of the flank face covering portion 24 at a position 0.05 mm away from the cutting edge 18 is within the above range.
  • the film thickness C1 of the rake face covering part 22 at a position 0.1 mm away from the cutting edge 18 and the film thickness C2 of the flank covering part 24 at a position 0.1 mm away from the cutting edge 18 The ratio of is set to be in the above range.
  • the ratio between the film thickness C1 of the rake face covering portion 22 and the film thickness C2 of the flank face covering portion 24 is set to satisfy the above range at each distance from the cutting edge 18.
  • the coating 20 may be formed with the same film thickness from the cutting edge 18 as a whole, but may be formed in an inclined manner so that the film thickness decreases as the distance from the cutting edge 18 increases.
  • the base material 12 has a virtual line (extension line) in which a portion corresponding to the cutting edge 18 (hereinafter referred to as a base material edge 12a) extends a rake face 12b of the base material 12. ) It is formed so as to be away from the intersection of P1 and a virtual line (extension line) P2 obtained by extending the flank 12c of the base material 12.
  • the chamfering distance x from the intersection to the base material edge 12a is set in a range of 0.20 ⁇ m to 18 ⁇ m.
  • the base material edge 12a is formed in an arc shape having a radius r in the range of 0.5 ⁇ m to 6.0 ⁇ m.
  • the chamfer distance x is the distance between the intersection point and the base material edge 12a.
  • the base material edge 12a is rounded (R)
  • the rake face 12b in the base material 12 is used.
  • the imaginary line passing through the center of the blade angle ⁇ formed by the flank 12c is the distance from the intersection of the base material edge 12a to the intersection.
  • the sharpness of the cutting edge 18 of the replacement blade 10 of the cutting tool obtained by forming the coating film 20 is lost, the sharpness is deteriorated, and the cutting power is increased.
  • the base material edge 12a is formed in an arc shape larger than the radius of 6 ⁇ m, the sharpness of the cutting edge 18 of the replacement blade 10 of the cutting tool obtained by forming the coating film 20 is impaired, and the sharpness is deteriorated. There is a demerit that power increases.
  • the chamfering distance x It is substantially difficult to set the chamfering distance x to be smaller than 0.20 ⁇ m due to limitations in processing accuracy and the like, and when the coating 20 is formed, the rake face 12b and the flank face 12c are sharpened and ground. There is not much difference from the sharpened material edge 12a.
  • the coating 20 can be formed by PVD (physical vapor deposition), and the arc ion plating method is suitable among PVDs, but may be a magnetron sputtering method.
  • PVD physical vapor deposition
  • the arc ion plating method is suitable among PVDs, but may be a magnetron sputtering method.
  • one surface of the rake face 12b or the flank face 12c of the base material 12 is placed so as to be behind a shielding object against an evaporation source such as chromium, or the deposition source
  • any one of the rake face 14 and the flank face 16 in the coating 20 can be made thicker than the film thickness of the other face.
  • the coating film 20 in which the rake face 14 and the flank face 16 have different film thicknesses C1 and C2 can be easily formed in one batch of PVD processing.
  • the replaceable blade 10 of the cutting tool has both the rake face 14 and the flank face 16 covered with the coating 20, it is compared with a single-side coated product obtained by polishing one side after forming the coating 20 on both sides. Even if the coating film 20 is thin, the wear band width can be reduced by the presence of the coating film 20, and friction with the work material during cutting can be reduced.
  • the coating film 20 is formed with a film thickness of the other surface thinner than any one of the rake face 14 and the flank face 16, generation of high residual stress can be suppressed, and the cutting edge resulting from the residual stress can be suppressed. The occurrence of 18 chippings (self-destruction) can be prevented. Further, by reducing the film thickness of the other surface of the coating film 20 than either one of the rake face 14 and the flank face 16, the film thickness ratio of the respective faces of the flank face and the flank face that are easy to be coated on one side is set.
  • chipping of the cutting portion that contacts the work material at the cutting edge 18 at the time of cutting can be suppressed, and chipping of a non-cutting portion that does not contact the work material can be suppressed. Can also be suppressed.
  • the replaceable blade 10 of the cutting tool of the embodiment does not need to remove the coating 20 on the rake face 14 or the flank 16 by blade grinding after forming the coating 20 as in a single-side coated product. No chipping of the cutting edge 18 due to.
  • the manufacturing cost can be reduced without restrictions such as a special dedicated grindstone and severe polishing conditions required for edged polishing after the coating is formed.
  • the ratio of the film thicknesses C1 and C2 of the other coating parts 24 and 22 to the film thicknesses C1 and C2 of the one coating parts 22 and 24 is set to be in the range of 0.01 to 0.05.
  • the replacement blade 10 of the cutting tool is formed by chamfering the base material edge 12a and forming a minute surface (R surface in the embodiment) on the edge 12a.
  • generation of high residual stress can be further suppressed, and the occurrence of chipping (self-destruction) of the cutting blade 18 due to the residual stress can be more suitably prevented.
  • chipping of not only the non-cutting portion that does not contact the work material but also the cutting material that contacts the work material at the cutting edge 18 at the time of cutting can be more suitably suppressed.
  • the composite multilayer coating of Test 1 is laminated in the order of five layers of CrN, one layer of CrNO, one layer of Cr 2 O 3 , one layer of CrN, one layer of CrNO, and one layer of Cr 2 O 3 from the base material side.
  • the thickness of each layer with respect to the total thickness is 50% for the CrN layer, 10% for the CrNO layer, 10% for the Cr 2 O 3 layer, 10% for the CrN layer, and 10% for the CrNO layer from the base material side. %, And the outermost Cr 2 O 3 layer is 10%.
  • the CrNO layer is an oxynitride and does not show a diffraction peak of chromium oxide by X-ray diffraction.
  • the Cr 2 O 3 layer shows a diffraction peak of chromium oxide by X-ray diffraction
  • the Cr 2 O 3 layer may contain a slight amount of nitrogen.
  • Test 1 a cutting test was performed in which an NC router was used to cut a European red pine glulam with a router bit (blade tip diameter: 46 mm) equipped with the carbide replacement blades of Test Examples 1 to 4 and Comparative Example 1.
  • the rotational speed of the router bit was 6000 rpm, and the work material was cut 180 m while being cut by 20 mm into the work material while feeding the work material at a feed rate of 1 m / min.
  • the amount of retraction of the cutting edge and the wear band width B were measured based on the cross-sectional shape of the cutting edge. The result is shown in FIG.
  • FIG. 6 corresponds to Test Example 1 and FIG. 7A shows the cross-sectional shape of the cutting edge after the cutting test with the carbide replacement blade of Test Example 1.
  • FIG. The circle 2 in FIG. 6 corresponds to Test Example 2, and the cross-sectional shape of the cutting edge after the cutting test with the cemented carbide replacement blade of Test Example 2 is shown in FIG.
  • the circle 3 in FIG. 6 corresponds to Test Example 3
  • FIG. 7C shows the cross-sectional shape of the cutting edge after the cutting test with the superhard replacement blade of Test Example 3.
  • a circle 4 in FIG. 6 corresponds to Test Example 4
  • FIG. 7D shows a cross-sectional shape of the cutting edge after the cutting test with the cemented carbide replacement blade of Test Example 4.
  • the film thickness of the rake face covering portion is in the range of 0.5 to 15 ⁇ m.
  • the superhard blades of Test Examples 3 and 4 in which the ratio of the film thickness of the flank film thickness part to the film thickness of the rake face covering part is 0.15 or less.
  • the superhard spare blade of Test Example 4 having a ratio of 0.05 or less has self-polishing properties comparable to Comparative Example 1.
  • the superhard spare blades of Test Examples 1 to 4 in which both the rake face and the flank face are coated with a coating are the superhard spare blades of Comparative Example 1 in which only the rake face is covered with a coating. It can be confirmed that the wear band width B is smaller than that.
  • the relationship between the rake face and the flank face is opposite to that of Test Examples 1 to 4 and Comparative Example 1 in terms of the design of the blade used.
  • the upper surface indicated by reference numeral 14 is a relief surface, and the inclined surface indicated by reference numeral 16 is used as a rake face.
  • the superhard spare blades of Test Examples 5 to 7 and Comparative Example 2 are set to form a rake face covering portion having a film thickness of 5 to 6 ⁇ m on the rake face.
  • the film thickness of the coating is as shown in FIG.
  • the composite multilayer coating of Test 2 has a structure in which four layers of CrN, one layer of CrNO, and one layer of Cr 2 O 3 are laminated in this order from the base material side. From the side, the CrN layer is 60%, the CrNO layer is 20%, and the outermost Cr 2 O 3 layer is 20%.
  • the CrNO layer is an oxynitride and does not show a diffraction peak of chromium oxide by X-ray diffraction.
  • the Cr 2 O 3 layer has a diffraction peak of chromium oxide in X-ray diffraction, and the Cr 2 O 3 layer may contain a slight amount of nitrogen.
  • Test 2 a cutting test was performed on an NC router by cutting European red pine laminated wood with a 75 mm diameter cutter equipped with the carbide replacement blades of Test Examples 5 to 7 and Comparative Example 2.
  • the rotational speed of the router bit was 6000 rpm, while the work material was fed at a feed rate of 1 m / min, the work material was cut 120 m while being cut into the work material by 20 mm.
  • the amount of retraction of the cutting edge and the wear band width B were measured based on the cross-sectional shape of the cutting edge. The result is shown in FIG.
  • FIG. 8 corresponds to Test Example 5 and FIG. 9A shows the cross-sectional shape of the cutting edge after the cutting test using the carbide replacement blade of Test Example 5.
  • FIG. A circle 2 in FIG. 8 corresponds to Test Example 6, and FIG. 9B shows a cross-sectional shape of the cutting edge after the cutting test using the superhard replacement blade of Test Example 6.
  • a circle 3 in FIG. 8 corresponds to Test Example 7, and FIG. 9C shows a cross-sectional shape of the cutting edge after the cutting test using the superhard replacement blade of Test Example 7.
  • FIG. 9 (d) shows the cemented carbide of Comparative Example 2 in which the coating on the rake face and flank face was removed by blade grinding under the same conditions as the carbide replacement blade of Test Example 6 and the flank face coating was removed.
  • the film thickness of the coating covering the rake face is the same as the film thickness of the rake face covering portion of Test Example 6.
  • the rake face covering portion in the coating is thicker than the flank face covering portion.
  • the carbides of Test Example 6 and Test Example 7 in which the ratio of the thickness of the flank thickness portion to the thickness of the rake face covering portion is 0.15 or less.
  • FIG. 10A is an electron micrograph showing an enlargement of the cutting edge of the superhard replacement blade of Test Example 4, and FIG. 10B is an enlarged view of the cutting edge of the superhard replacement blade of Test Example 1.
  • FIG. 10C is an electron micrograph showing an enlargement of the cutting edge of the cemented carbide replaceable blade of Comparative Example 1, both in a state before the cutting test is performed. As shown in FIG. 10 (c), it is possible to confirm that a relatively large chipping occurs in the cutting edge of the cemented carbide replaceable blade of Comparative Example 1 in which the edge polishing is performed after the coating is formed.
  • chipping of the cutting edge does not occur in the superhard replacement blade of Test Example 4 in which the ratio of the thickness of the flank covering portion to the thickness of the portion is 0.05 or less. Further, it can be confirmed that the chipping of the cutting edge is not generated in the superhard replacement blade of Test Example 4 as compared with the superhard replacement blade of Test Example 1.
  • the coating is formed so that the ratio of the film thickness of the flank covering portion to the film thickness of the rake face covering portion is larger than 0.15 as in Test Example 1 shown in FIG. High compressive stress may remain, which is presumed to cause the cutting edge to self-break or chipping easily during cutting.
  • the cutting test described in Test 1 was performed on the superhard blades of Test Example 4, Test Example 1 and Comparative Example 1, respectively, and the change in the cutting edge line roughness after cutting from the cutting edge line roughness before cutting was measured. confirmed.
  • the result is shown in FIG.
  • the magnification of the horizontal axis which is the direction in which the cutting edge line extends, is 10 times, whereas the magnification of the vertical axis showing the change from the cutting edge line before cutting is 500 times.
  • the aspect ratio is shown.
  • the cutting portion that is in direct contact with the work material in the cutting work of Test 1 is 4.5 mm, and the amount of retraction of the cutting edge line after cutting in the cutting portion of Test Example 4 in FIG.
  • 11A is 9 to 10 ⁇ m. .
  • the cemented carbide replaceable blades of Test Example 1 and Comparative Example 1 do not contact the work material as well as the cut portion that directly contacts the work material during the cutting process. Chipping has occurred even in the non-cutting part, and when the coating is formed so that the ratio of the film thickness of the flank covering part to the film thickness of the rake face covering part is larger than 0.15, chipping in the non-cutting part is remarkable. I know that there is.
  • according to the cemented carbide spare blade of Test Example 4 which is an embodiment of the present invention, it can be confirmed that almost no chipping has occurred in the non-cutting portion, and good cutting edge quality is maintained before and after cutting. ing.
  • the super hard blades of Test Examples 8 to 13 have a rake face covering portion with a film thickness of 5 ⁇ m to 6 ⁇ m formed on the rake face, and the film thickness distribution between the rake face and the flank face is the same as Test Example 4 of Test 1 ( This is the same as circle 4) in FIG.
  • the portion corresponding to the cutting edge in the base materials of Test Examples 9 to 13 is formed into an arc shape (R surface) by blasting, and the base material of Test Example 8 is subjected to blasting processing on the portion corresponding to the cutting edge. Absent.
  • the radius r (the chamfering distance x from the intersection of the rake face extension line of the base metal and the flank extension line of the base metal) of the portion corresponding to the cutting edge of the base metal is Test Example 9 Is 0.5 (0.6) ⁇ m, Test Example 10 is 1.1 (1.3) ⁇ m, Test Example 11 is 1.8 (2.1) ⁇ m, Test Example 12 is 3.1 (3.6) ) ⁇ m, Test Example 13 was 6.0 (7.0) ⁇ m, and Unblasted Test Example 8 was 0.4 (0.5) ⁇ m.
  • the chamfering distance x is calculated by the equation of ⁇ R surface radius r / sin (cutter angle ⁇ ) ⁇ ⁇ R surface radius r.
  • the composite multilayer coating of Test 3 is laminated in the order of 5 layers of CrN, 1 layer of CrNO, 1 layer of Cr 2 O 3 , 1 layer of CrN, 1 layer of CrNO, 1 layer of Cr 2 O 3 from the base material side.
  • the thickness of each layer with respect to the total thickness is 50% for the CrN layer, 10% for the CrNO layer, 10% for the Cr 2 O 3 layer, 10% for the CrN layer, and 10% for the CrNO layer from the base material side. %, And the outermost Cr 2 O 3 layer is 10%.
  • the CrNO layer is an oxynitride and does not show a diffraction peak of chromium oxide by X-ray diffraction.
  • the Cr 2 O 3 layer shows a diffraction peak of chromium oxide by X-ray diffraction
  • the Cr 2 O 3 layer may contain a slight amount of nitrogen.
  • Test 3 a cutting test was performed in which an NC router was used to cut a European red pine glulam with a router bit (cutting edge diameter: 46 mm) to which the superhard blades of Test Examples 8 to 13 were attached.
  • the rotational speed of the router bit was 6000 rpm, and the work material was cut by 60 m while being cut by 20 mm into the work material while feeding the work material at a feed rate of 1 m / min.
  • the change of the cutting edge line roughness after cutting from the cutting edge line roughness before cutting was confirmed. The result is shown in FIG. In each figure of FIG.
  • the magnification of the horizontal axis which is the direction in which the cutting edge line extends, is 10 times, whereas the magnification of the vertical axis showing the change from the cutting edge line before cutting is 500 times.
  • the aspect ratio is shown.
  • the cutting part which contacts a work material in the cutting process of Test 3 is 5.0 mm.
  • the present invention is not limited to the above-described configuration, and can be modified as follows, for example.
  • the cutting tool is not limited to the shape shown in FIG. 1, and is appropriately formed according to the work material, the cutting method, and the like.
  • Examples of cutting tools to which the present invention can be applied include flat blades such as scissors blades, cutters, tip saws, router bits, knives, only corners, and replacement blades thereof.
  • the cutting tool according to the present invention is not limited to wood, and can be suitably used for cutting non-ferrous metals and their alloys, wood materials or resins.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Physical Vapour Deposition (AREA)
  • Drilling Tools (AREA)
  • Knives (AREA)
PCT/JP2015/056225 2014-03-25 2015-03-03 切削工具 WO2015146507A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201580016073.2A CN106457411B (zh) 2014-03-25 2015-03-03 切削工具
JP2016510185A JP6404906B2 (ja) 2014-03-25 2015-03-03 切削工具
US15/122,779 US10179366B2 (en) 2014-03-25 2015-03-03 Cutting tool
EP15769762.4A EP3106250B1 (en) 2014-03-25 2015-03-03 Cutting tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-061607 2014-03-25
JP2014061607 2014-03-25

Publications (1)

Publication Number Publication Date
WO2015146507A1 true WO2015146507A1 (ja) 2015-10-01

Family

ID=54195037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/056225 WO2015146507A1 (ja) 2014-03-25 2015-03-03 切削工具

Country Status (5)

Country Link
US (1) US10179366B2 (zh)
EP (1) EP3106250B1 (zh)
JP (1) JP6404906B2 (zh)
CN (1) CN106457411B (zh)
WO (1) WO2015146507A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018061408A1 (ja) * 2016-09-29 2018-04-05 住友電工ハードメタル株式会社 切削工具
JP2018103338A (ja) * 2016-12-28 2018-07-05 三菱マテリアル株式会社 ダイヤモンド被覆回転切削工具及びその製造方法
WO2018155644A1 (ja) * 2017-02-24 2018-08-30 京セラ株式会社 切削インサート及びこれを備えた切削工具
CN112584955A (zh) * 2018-07-30 2021-03-30 京瓷株式会社 分切机刀片以及分切机
WO2022138400A1 (ja) * 2020-12-25 2022-06-30 京セラ株式会社 被覆工具および切削工具
WO2023286411A1 (ja) * 2021-07-12 2023-01-19 兼房株式会社 切削工具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5764181B2 (ja) * 2013-10-31 2015-08-12 ユニオンツール株式会社 硬質皮膜被覆切削工具
US11376675B2 (en) * 2014-04-23 2022-07-05 Korloy Inc. Cutting tool having partially-removed film formed thereon
EP3479938A4 (en) * 2016-06-29 2020-03-04 Sumitomo Electric Hardmetal Corp. CUTTING TOOL
CN114206537A (zh) * 2019-08-01 2022-03-18 住友电工硬质合金株式会社 切削工具的制造方法以及切削工具
DE102019216199A1 (de) * 2019-10-21 2021-04-22 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Werkzeugteil und Verfahren zum Herstellen eines solchen Werkzeugteils
JP7140786B2 (ja) * 2020-01-10 2022-09-21 ユニオンツール株式会社 硬脆材切削加工用回転切削工具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642412B2 (zh) * 1975-08-29 1981-10-05
JPH02218522A (ja) * 1989-02-14 1990-08-31 Sumitomo Electric Ind Ltd 被覆超硬合金工具
JP2004122263A (ja) * 2002-09-30 2004-04-22 Sumitomo Electric Ind Ltd 高精度加工用被覆切削工具
JP2005007555A (ja) * 2003-06-20 2005-01-13 Osg Corp 硬質被膜被覆切削工具
JP2015085462A (ja) * 2013-10-31 2015-05-07 ユニオンツール株式会社 硬質皮膜被覆切削工具

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05261616A (ja) 1992-03-18 1993-10-12 Mitsubishi Materials Corp ターニングブローチ加工用被覆切削工具
JPH07196379A (ja) 1993-12-28 1995-08-01 Kobe Steel Ltd 気相合成ダイヤモンドろう付け工具およびその製造方法
US5597272A (en) * 1994-04-27 1997-01-28 Sumitomo Electric Industries, Ltd. Coated hard alloy tool
JP2001347403A (ja) 2000-06-09 2001-12-18 Sumitomo Electric Ind Ltd 被覆切削工具
EP1306150B1 (en) * 2000-07-12 2012-03-21 Sumitomo Electric Industries, Ltd. Coated cutting tool
JP3672083B2 (ja) 2000-09-19 2005-07-13 Ｋｄｄｉ株式会社 モバイルｉｐにおけるアドレス変換方法
DE10115390A1 (de) * 2000-12-22 2002-06-27 Mitsubishi Materials Corp Toki Beschichtetes Schneidwerkzeug
JP2002194546A (ja) * 2000-12-25 2002-07-10 Ngk Spark Plug Co Ltd 硬質炭素被覆部材及び切削工具
JP4443177B2 (ja) 2003-09-26 2010-03-31 京セラ株式会社 スローアウェイチップ
US7455918B2 (en) * 2004-03-12 2008-11-25 Kennametal Inc. Alumina coating, coated product and method of making the same
EP1609883B1 (en) * 2004-06-24 2017-09-20 Sandvik Intellectual Property AB Coated metal cutting tool
SE528427C2 (sv) * 2004-07-09 2006-11-07 Seco Tools Ab Ett belagt skär för metallbearbetning och sätt att tillverka detta
WO2006070509A1 (ja) * 2004-12-28 2006-07-06 Sumitomo Electric Hardmetal Corp. 表面被覆切削工具および表面被覆切削工具の製造方法
JP4739321B2 (ja) * 2005-10-21 2011-08-03 住友電工ハードメタル株式会社 刃先交換型切削チップ
JP2007136631A (ja) * 2005-11-21 2007-06-07 Sumitomo Electric Hardmetal Corp 刃先交換型切削チップ
JP4783153B2 (ja) * 2006-01-06 2011-09-28 住友電工ハードメタル株式会社 刃先交換型切削チップ
WO2007122859A1 (ja) * 2006-03-28 2007-11-01 Kyocera Corporation 切削工具及びその製造方法、並びに切削方法
WO2007111301A1 (ja) * 2006-03-28 2007-10-04 Kyocera Corporation 表面被覆工具
JP2007290180A (ja) 2006-04-24 2007-11-08 Nippon Coating Center Kk 木材切削用刃物
US7967533B2 (en) * 2006-08-31 2011-06-28 Sumitomo Electric Hardmetal Corp. Surface-coated cutting tool
US20090004449A1 (en) * 2007-06-28 2009-01-01 Zhigang Ban Cutting insert with a wear-resistant coating scheme exhibiting wear indication and method of making the same
US7947363B2 (en) * 2007-12-14 2011-05-24 Kennametal Inc. Coated article with nanolayered coating scheme
US8652638B2 (en) * 2009-03-03 2014-02-18 Diamond Innovations, Inc. Thick thermal barrier coating for superabrasive tool
JP5418833B2 (ja) * 2009-12-11 2014-02-19 三菱マテリアル株式会社 表面被覆立方晶窒化ほう素基超高圧焼結材料製切削工具
JP5642412B2 (ja) 2010-04-01 2014-12-17 Ｊｆｅシビル株式会社 平面位置アジャスト吊り治具
EP2623241B1 (en) * 2010-09-29 2017-11-08 Kyocera Corporation Cutting tool
JP5201424B2 (ja) * 2010-10-23 2013-06-05 三菱マテリアル株式会社 炭素膜被覆切削工具およびその製造方法
JP5590334B2 (ja) * 2011-02-28 2014-09-17 三菱マテリアル株式会社 ダイヤモンド被覆切削工具
CH705029A1 (de) * 2011-05-27 2012-11-30 Bloesch W Ag Beschichtetes Holzbearbeitungswerkzeug.
JP5174292B1 (ja) * 2011-07-25 2013-04-03 京セラ株式会社 切削工具
JP5344204B2 (ja) * 2012-03-05 2013-11-20 三菱マテリアル株式会社 表面被覆切削工具
JP5892472B2 (ja) * 2012-06-19 2016-03-23 三菱マテリアル株式会社 硬質被覆層が高速断続切削加工ですぐれた耐剥離性、耐チッピング性を発揮する表面被覆切削工具
EP2935653B1 (en) * 2012-12-21 2022-06-29 Sandvik Intellectual Property AB Coated cutting tool and method for manufacturing the same
JP5871354B1 (ja) * 2015-07-13 2016-03-01 住友電工ハードメタル株式会社 表面被覆切削工具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642412B2 (zh) * 1975-08-29 1981-10-05
JPH02218522A (ja) * 1989-02-14 1990-08-31 Sumitomo Electric Ind Ltd 被覆超硬合金工具
JP2004122263A (ja) * 2002-09-30 2004-04-22 Sumitomo Electric Ind Ltd 高精度加工用被覆切削工具
JP2005007555A (ja) * 2003-06-20 2005-01-13 Osg Corp 硬質被膜被覆切削工具
JP2015085462A (ja) * 2013-10-31 2015-05-07 ユニオンツール株式会社 硬質皮膜被覆切削工具

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018061408A1 (ja) * 2016-09-29 2018-04-05 住友電工ハードメタル株式会社 切削工具
CN109789496A (zh) * 2016-09-29 2019-05-21 住友电工硬质合金株式会社 切削工具
JPWO2018061408A1 (ja) * 2016-09-29 2019-07-18 住友電工ハードメタル株式会社 切削工具
US11376668B2 (en) 2016-09-29 2022-07-05 Sumitomo Electric Hardmetal Corp. Cutting tool
JP2018103338A (ja) * 2016-12-28 2018-07-05 三菱マテリアル株式会社 ダイヤモンド被覆回転切削工具及びその製造方法
WO2018155644A1 (ja) * 2017-02-24 2018-08-30 京セラ株式会社 切削インサート及びこれを備えた切削工具
JPWO2018155644A1 (ja) * 2017-02-24 2019-12-26 京セラ株式会社 切削インサート及びこれを備えた切削工具
CN112584955A (zh) * 2018-07-30 2021-03-30 京瓷株式会社 分切机刀片以及分切机
CN112584955B (zh) * 2018-07-30 2023-10-31 京瓷株式会社 分切机刀片以及分切机
WO2022138400A1 (ja) * 2020-12-25 2022-06-30 京セラ株式会社 被覆工具および切削工具
WO2023286411A1 (ja) * 2021-07-12 2023-01-19 兼房株式会社 切削工具

Also Published As

Publication number Publication date
EP3106250B1 (en) 2019-07-24
CN106457411A (zh) 2017-02-22
EP3106250A4 (en) 2017-11-01
CN106457411B (zh) 2018-12-11
US10179366B2 (en) 2019-01-15
JPWO2015146507A1 (ja) 2017-04-13
US20170072474A1 (en) 2017-03-16
JP6404906B2 (ja) 2018-10-17
EP3106250A1 (en) 2016-12-21

Similar Documents

Publication Publication Date Title
JP6404906B2 (ja) 切削工具
EP2576854B1 (en) Coated cutting tool
EP2939806B1 (en) Cutting tool
WO2014061292A1 (ja) 表面被覆切削工具
JP2016185589A (ja) 表面被覆切削工具
JP5783462B2 (ja) 表面被覆切削工具
WO2018037648A1 (ja) 表面被覆切削工具およびその製造方法
JP2015066644A (ja) 高速切削加工で硬質被覆層がすぐれた耐摩耗性と耐チッピング性を発揮する表面被覆切削工具
JP5975214B2 (ja) 表面被覆切削工具
WO2018037647A1 (ja) 切削工具およびその製造方法
JP5975339B2 (ja) 表面被覆切削工具
JP5094293B2 (ja) 切削工具
JP5349164B2 (ja) 切削工具
JP6861137B2 (ja) 切削工具用硬質皮膜
EP4371683A1 (en) Cutting tool
WO2021025014A1 (ja) 超砥粒、及び超砥粒ホイール
JP2011110653A (ja) 切削工具
JP6221872B2 (ja) 表面被覆切削工具
JP2014079835A (ja) 表面被覆切削工具
WO2018037624A1 (ja) 表面被覆切削工具およびその製造方法
JP2015058503A (ja) 表面被覆切削工具
JP2007021700A (ja) 小径部材及び小径部材の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15769762

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016510185

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 15122779

Country of ref document: US

REEP Request for entry into the european phase

Ref document number: 2015769762

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015769762

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE